Blizzard nowadays - ethics etc

I just saw a Steam ad about Diablo IV.Got intrigued by it.I have Diablo II and III. III was fun and I even played through it.

Then I started to think about the bad press I've heard about Blizzard.I don't know/remember specifics as I haven't much followed the news. I do recall something about Overwatch though.

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How's the situation nowadays?Should I keep playing with Blizzard or boycott it?